Microbiology experimental method for insulation effect of isolation wards

Takes the black gemma mutant of Bacillus subtilis as an experimental culture. Presents the preparation of bacterial solution, the principle of bacteria dispensing system, the sampling methods of sediment bacteria and floating bacteria, the culture and counting methods of bacteria, and the specific experimental methods for the testing of filtering effect of return air filter on bacteria, the pollution area of microbe aerosol from patients and the insulation effect of isolation ward when opening and closing door.